General
All materials, labor and equipment necessary to install a precast, presloped, chemical- resistant polyester concrete (or vinylester concrete) trench drainage system as specified and as shown on the working drawings shall be included. Install Smith Drainage Systems in strict accordance with manufacturer's recommendations and shop drawings.

Related Work
Work specified in other sections includes, but is not limited to: excavation and backfill, cast-in-place concrete, and mechanical equipment.

System Description
Modular trench drainage system precast from a corrosion resistant polyester concrete (or vinylester concrete) including interlocking modular components for on-site installation.

Submittals
Manufacturer will submit, when required, shop drawings showing a schematic plan of the total drainage system listing all parts being provided with exact centerline dimensions suitable for installation. Copies of the manufacturer's recommended method of installation, assembly, and anchorage shall be submitted for review.

Products
Manufacturer shall be Jay R. Smith Mfg. Co., Montgomery, Alabama.

Each precast polyester polymer concrete one meter unit shall have a .6% built-in slope and a permanently cast-in integral galvanized steel, stainless steel or brass rail with a maximum edge thickness of .10". The integral cast-in metal rail shall provide mechanical support as a one-part unit which can support a 10 ton, hard rubber wheel load and 60 ton gross vehicle weight, with class "E" rated grates.

All metal material used in grate and rail construction shall be minimum of .10" thick.

Channel profile shall include positive interlocking tongue and groove connections (male and female joining ends) which can be sealed to provide water tight connections.

Locking device recesses are formed into the reinforced channel walls. All locking device recess material of construction shall be polymer concrete.

Quicklock^® locking device is provided with selected grates. Quicklock^® insures proper and secure grate lock down each time the grate is replaced in the trench.

The Quicklock^® grates shall have a non-removal factory pressed stainless securing lug with mating stainless steel spring clip locking bar.

All precast polyester polymer concrete one meter units shall have a .6% built-in slope and cast-in integral solid metal rail and shall have a preformed vertical 4" and flumed 6" knock-out on the bottom of the unit.

All catch basins shall have a permanently cast-in integral solid metal rail with a maximum edge thickness of .10”. The cast-in solid metal rail shall support 135,000 lbs. - 2,788 psi vehicle weight, with class “E” rated grates.

Site Preparation
Excavate the area for channel placement wide and deep enough to accommodate the standard channel size and a minimum of 4" concrete encasement on both sides as well as underneath the channel. Channels require a minimum of 4" of concrete support and top of channel must be evenly aligned to the surface of the surrounding slab.

Installation
Channel sections are installed from the outlet end of the system, working from either catch basin or deeper channel sections to shallow channel sections. Insert channels from above to allow ends to interlock. Channel sections shall be placed on Rante Arrows, brick, rebar basket, Channel Chair, low slump concrete, grout slurry, or suspended to obtain correct finished elevation. Cutting will be made, if required, by masonry or concrete saw. Temporarily place grate in channel to avoid compression during concrete placement.

Concrete Pour
Protect grates and channel interior during pouring of concrete. Place concrete in a manner that will not dislodge the channels. Concrete shall be at finished level or 1/8" above the top of the channel to ensure efficient drainage and adequate channel edge protection.

Finishing and Clean up
Following final set of concrete, remove grate protection, place grates in final position and engage locking bolts in correct location.

The approved supplier is Jay R. Smith Mfg. Co., 2781 Gunter Park Drive East, Montgomery, Alabama 36109. Telephone: 334-277-8520.